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Nata [24]
2 years ago
8

The equation y=x^2-12x+45 models the number of books y sold in a bookstore x days after an award-winning author appeared at an a

utograph-signing reception.
How many books were sold at the autograph session?

What is the minimum nunber of books sold?

What day did that occur?

How many books were sold on day fifteen?​
Mathematics
2 answers:
choli [55]2 years ago
7 0

Answer:

3.2

Step-by-step explanation:

xz_007 [3.2K]2 years ago
3 0

Answer:

Answer: The first day the author reaches 100 days is on day 16.

To solve this problem, you could use a graphing calculator to graph the given equation. Then, determine when this line crosses 100. It crosses when x = 15.539. Therefore, we would have to round up to 16 so it is at least 100.

You could use the quadratic equation to solve: 100 = x^2 -12x + 45

Either you will get 16. If you use the quadratic formula, make sure to only use the positive answer.

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Anna007 [38]

Answer:

Step-by-step explanation:

b/c we know that these triangles both have equal sides... that is given that <u>ab</u> and<u> be</u> are the same length.   and that <u>be </u>and <u>cd</u> are parallel , we know that they both are isosceles triangles and that the base angles are the same.  The side on <u> ad </u>and<u> ae</u>  have equal angles.

so we can make the equation

2a +56 = 180  (b/c we know that around a triangle it's 180°

2 a = 124

a = 62

so ∠ BAE = 62°

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3 0
3 years ago
Which equation has the least steep graph?
inn [45]
The answer to your question is D.
8 0
3 years ago
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PLS HELPP PLSS this homework is so hard
Illusion [34]
So you should label the x axis and y axis like I did then you use the formula!

6 0
2 years ago
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What is f[g(3)] for the following function? <br> f(x) = 4x2 − 3<br><br> g(x) = 5x − 2
lukranit [14]

Answer:

673

Explanation:

  • f(x) = 4(x)² − 3
  • g(x) = 5(x) − 2

solve:

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8 0
2 years ago
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Jen walked 1/4 of a mile in 1/2 of an hour. At this rate, how long will it take her to walk 2 miles to the park?
Leto [7]

Answer:

The awnser is C. 4 hours

Step-by-step explanation:

It takes her 2 hours two walk 1 mile so 2*2 is 4

4 0
3 years ago
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